Dictionary of Human Evolution and Biology

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Dispersal

1. permanent emigration of individuals out of a group. Among primates this occurs when members of one sex leave the natal group at puberty or it may occur when a larger group undergoes permanent fission into two or more smaller groups, as has been observed among chimpanzees.

See diaspora.

2. slow, almost imperceptible encroachment or retreat of species into or away from a developing or receding niche; scattering, dispersion.

Cf. migration.

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